We'll be arriving at JFK from Charlotte via American, arriving at JFK at 3:19 pm. We're flying out of JFK via Air France @6:50 pm on a Monday evening, so that gives us a 3.5 hour window.
I've researched and found that the airtrain should take anywhere from 10-15 minutes to get from terminal 8 to terminal 1. We're not checking any luggage. Any reason to be concerned or re-think the flight from Charlotte? Any feedback would be much appreciated.